Now Hungary sends in the tanks: Army patrols 250-mile border with Croatia after leader accuses Zagreb of 'forcing' migrants into the country

Tensions between the neighbouring countries have mounted since Hungary blocked a route for migrants into EU countries. Since then, 20,000 migrants have entered Croatia. Zoran Milanovic said his country could take no more and would give them food, water and medical attention, before sending them on their often perilous journey to western and northern Europe. Some 3,000 entered Hungary by bus and train on Friday with officials accusing Croatia of committing 'a major violation of international law'.